Back to the CTI sectionCTI case studies

Analyze like a CTI team

Six threat analysis scenarios: EDR timeline, malware configuration, exploitation logs, IOC feeds, attribution and forecasting. You analyze the evidence, answer at each step and get a detailed correction.

Beginner45 min - 1 h5 steps

Multi-source IOC correlation

The SIEM raises 2,300 “IOC” alerts overnight. Separate noise from signal: threat feed false positives, a DNS beacon, a PowerShell execution and a MISP match.

SIEM (Splunk, Elastic, Sentinel)MISPVirusTotalLogs DNS
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Intermediate1 h 305 steps

Analyzing a targeted intrusion

A defense subcontractor detects a suspicious network beacon. From the EDR timeline, rebuild the attack chain, map it to MITRE ATT&CK and assess what can (and cannot) be said about the attacker.

MITRE ATT&CK NavigatorEDR (Defender, CrowdStrike…)SysmonZeek / NDR
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Intermediate1 h - 1 h 305 steps

Infostealer campaign through malvertising

Three workstations downloaded a trapped “7-Zip installer”. Analyze the sandbox report, cluster the samples, pivot on the infrastructure and choose the right response measures.

ANY.RUN / CAPE SandboxVirusTotalYARASigma
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Intermediate1 h - 1 h 305 steps

Forecasting the threat to a hospital group

Management wants to know “what to expect in the next six months”. Analyze an initial access listing on a forum, leak site trends and your exposure, then produce an actionable strategic assessment.

Veille dark web (prestataire)Sites de fuite ransomware (ransomware.live)Shodan / scan de surface d’attaqueRapports ANSSI / ENISA
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Advanced1 h 30 - 2 h5 steps

Zero-day on a VPN gateway

A vendor publishes a critical advisory for its VPN gateway, with no patch. Your logs show exploitation predating the advisory. Analyze, prioritize and produce an alert for your sector.

Journaux de l’équipementCISA KEVEPSSCVSS v4
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Advanced1 h 30 - 2 h5 steps

Attributing an attack on a power grid

A power grid operator suffers an outage caused by industrial malware, followed by the wiping of its servers. Assess capabilities, intent, context and technical overlaps, then write a careful attribution.

Analyse de malware (Ghidra, IDA)MITRE ATT&CK for ICSDiamond ModelAnalysis of Competing Hypotheses (ACH)
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Organizations, domains and indicators are fictional. Techniques, tools and references (MITRE ATT&CK, TLP, estimative language) are real.

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